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The loudspeaker array with a high directivity and an arbitrary beam rotation

Research Project

Project/Area Number 25330187
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Perceptual information processing
Research InstitutionThe University of Electro-Communications

Principal Investigator

Haneda Yoichi  電気通信大学, 情報理工学(系)研究科, 教授 (80647496)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsスピーカアレー / 球面調和関数 / ビームフォーマ / 最小分散法 / 指向性 / 正多面体 / 指向性再生 / 音響信号処理 / 多重極展開
Outline of Final Research Achievements

We investigated the loudspeaker array which has a high directivity and an arbitrary beam rotation. The filter of a spherical loudspeaker array is designed based on the minimum variance method in the spherical harmonics domain. The beam pattern generated by the filter achieves a high directivity in a certain direction. Further, the beam direction can be rotated while maintaining the shape of the beam pattern. We implemented a prototype system that allows the listener to steer the beam direction using a gyro sensor in real time. The listening test result suggested that the location of the sound image varies based on the sound reflected from the wall. We evaluated the sound localization mechanism while rotating the beam direction based on the observed signal measured with a dummy head. The result showed that the sound of the beam reflected from a wall influences horizontal plane localization and sound image distance.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (15 results)

All 2016 2015 2014 2013 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 1 results) Remarks (3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 球面調和関数展開に基づく2種類の超接話マイクロホンアレイ2014

    • Author(s)
      羽田陽一,古家賢一,小山翔一,丹羽健太
    • Journal Title

      電子情報通信学会論文誌

      Volume: J97-A Pages: 264-273

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 目標音圧窓関数と重みの自動化による指向性スピーカアレイフィルタの検討2016

    • Author(s)
      佐藤 航也,関 貴志,羽田 陽一
    • Organizer
      電子情報通信学会 応用音響研究会
    • Place of Presentation
      ビーコンプラザ(別府市)
    • Year and Date
      2016-03-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 適応的な重み変更を用いた最小二乗法による正20面体スピーカアレイの指向性制御2016

    • Author(s)
      大小原 亮,羽田 陽一
    • Organizer
      電子情報通信学会 応用音響研究会
    • Place of Presentation
      ビーコンプラザ(別府市)
    • Year and Date
      2016-03-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 指向性スピーカアレイのサイドローブ抑圧を目的とした目標音圧窓関数の最適化の検討2016

    • Author(s)
      佐藤 航也,関 貴志,羽田 陽一
    • Organizer
      日本音響学会
    • Place of Presentation
      横浜桐蔭学園大学(横浜市)
    • Year and Date
      2016-03-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] Interactive directivity control using dodecahedron loudspeaker array2016

    • Author(s)
      Kazuna Bando and Yoichi Haneda
    • Organizer
      RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing
    • Place of Presentation
      Hawaii
    • Year and Date
      2016-03-07
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 正20面体スピーカアレイの指向性制御を用いたトランスオーラルシステムの検討2015

    • Author(s)
      大小原 亮,羽田 陽一
    • Organizer
      電子情報通信学会 応用音響研究会
    • Place of Presentation
      電通大(調布市)
    • Year and Date
      2015-07-03
    • Related Report
      2015 Annual Research Report
  • [Presentation] 正12面体スピーカアレイを用いた球面調和関数領域の MV ビームフォーマ2015

    • Author(s)
      坂東和奈,羽田陽一
    • Organizer
      日本音響学会2015年春季研究発表会
    • Place of Presentation
      東京都 中央大学
    • Year and Date
      2015-03-16
    • Related Report
      2014 Research-status Report
  • [Presentation] 球面調和関数領域のMVビームフォーマによる正12面体スピーカアレイの指向性制御2015

    • Author(s)
      坂東和奈,羽田陽一
    • Organizer
      電子情報通信学会 応用音響研究会
    • Place of Presentation
      石垣島
    • Year and Date
      2015-03-03
    • Related Report
      2014 Research-status Report
  • [Presentation] Close-talking spherical microphone array using sound pressure interpolation based on spherical harmonic expansion2014

    • Author(s)
      Y. Haneda, K. Furuya, S. Koyama, K. Niwa
    • Organizer
      IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP2014)
    • Place of Presentation
      イタリア フィレンツェ
    • Year and Date
      2014-05-04
    • Related Report
      2014 Research-status Report
  • [Presentation] 正12面体スピーカアレイによる球面調和関数の再現について2014

    • Author(s)
      坂東和奈,羽田陽一
    • Organizer
      日本音響学会春季研究発表会
    • Place of Presentation
      日本大学理工学部
    • Related Report
      2013 Research-status Report
  • [Presentation] 球面調和関数展開による音圧内挿を用いた超接話球面マイクロホンアレイ2013

    • Author(s)
      羽田陽一,古家賢一,小山翔一,丹羽健太
    • Organizer
      日本音響学会秋季研究発表会
    • Place of Presentation
      豊橋技術科学大学
    • Related Report
      2013 Research-status Report
  • [Remarks] 電気通信大学 羽田研ホームページ

    • URL

      http://www.hanedalab.inf.uec.ac.jp/

    • Related Report
      2015 Annual Research Report
  • [Remarks] 電気通信大学羽田研究室ホームページ

    • URL

      http://www.hanedalab.inf.uec.ac.jp/

    • Related Report
      2014 Research-status Report
  • [Remarks] 羽田研究室ホームページ

    • URL

      http://www.hanedalab.inf.uec.ac.jp/

    • Related Report
      2013 Research-status Report
  • [Patent(Industrial Property Rights)] フィルタ係数決定装置、フィルタ係数決定方法、プログラム、および再生システム2016

    • Inventor(s)
      羽田陽一,佐藤 航也,関 貴志,大小原亮
    • Industrial Property Rights Holder
      電気通信大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2016-032282
    • Filing Date
      2016-02-23
    • Related Report
      2015 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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